I have recorded an unbelievable loud BMW E46 M3 on the famous track Spa Francorchamps. I don't know which exhaust this is, but it is definitely the most loudest I have ever heard. As you can see, this M3 has a huge oversized spoiler. Follow me:1st Channel: http://www.YouTube.com/GUMBAL2nd Channel: http://www.YouTube.com/GUMBALTV3rd Channel: http://www.YouTube.com/CarChannelClassicFACEBOOK: http://www.fb.com/GUMBALTVINSTAGRAM: http://www.instagram.com/GUMBALTVTWITTER: http://Twitter.com/GUMBALTVhttp://www.gumbal.tvThanks you for watching my videos. All feedback on my videos are appreciated! Don't forget to like the video and subscribe to my channel. More videos coming up!- Hans